19521776

素因数分解:

$2^4\times {\mathrm{251}}^1\times {\mathrm{4861}}^1$

素因数の和:5120

約数の個数: 20

約数和(自身を含む): 37981944

約数和(自身を除く): 18460168

約数列:

[1, 2, 4, 8, 16, 251, 502, 1004, 2008, 4016, 4861, 9722, 19444, 38888, 77776, 1220111, 2440222, 4880444, 9760888, 19521776]

約数ペア:

[(1, 19521776), (2, 9760888), (4, 4880444), (8, 2440222), (16, 1220111), (251, 77776), (502, 38888), (1004, 19444), (2008, 9722), (4016, 4861)]